Home / 5,318.40-7,979.22-2,031.78

Finding the Fourth Proportional to 5,318.40, 7,979.22 and 2,031.78

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Solution

The fourth proportional to 5,318.40, 7,979.22 and 2,031.78 is: 3,048.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.40 : 7,979.22 = 2,031.78 : x
  2. Step 2: Convert to fraction form
    5,318.40/7,979.22 = 2,031.78/x
  3. Step 3: Cross multiply
    5,318.40x = 7,979.22 × 2,031.78
  4. Step 4: Simplify right side
    5,318.40x = 16,212,019.61
  5. Step 5: Solve for x
    x = 16,212,019.61/5,318.40
  6. Step 6: Final answer
    x = 3,048.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.